<template>
    <div class="login">
      <div class="left-login">
        <div class="title">
          <svg-icon icon-class="logo" class="logo" />Mster管理系统
        </div>
        <div class="center"></div>
      </div>
      <div class="right-login">
        <el-form
          ref="loginForm"
          :model="loginForm"
          :rules="loginRules"
          class="login-form"
        >
          <div class="title">后台管理系统</div>
          <div class="title-bottom"></div>
          <el-form-item prop="username">
            <el-input
              v-model="loginForm.username"
              type="text"
              auto-complete="off"
              placeholder="请输入您的账号"
            >
              <svg-icon
                slot="prefix"
                icon-class="user"
                class="el-input__icon input-icon"
              />
            </el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input
              v-model="loginForm.password"
              type="password"
              auto-complete="off"
              placeholder="请输入您的密码"
              @keyup.enter.native="handleLogin"
            >
              <svg-icon
                slot="prefix"
                icon-class="password"
                class="el-input__icon input-icon"
              />
            </el-input>
          </el-form-item>
          <el-form-item prop="code" v-if="captchaOnOff">
            <el-input
              v-model="loginForm.code"
              auto-complete="off"
              placeholder="验证码"
              style="width: 63%"
              @keyup.enter.native="handleLogin"
            >
              <svg-icon
                slot="prefix"
                icon-class="validCode"
                class="el-input__icon input-icon"
              />
            </el-input>
            <div class="login-code">
              <img :src="codeUrl" @click="getCode" class="login-code-img" />
            </div>
          </el-form-item>
  
          <el-form-item style="width: 100%">
            <el-button
              :loading="loading"
              size="medium"
              type="primary"
              style="width: 100%"
              @click.native.prevent="handleLogin"
            >
              <span v-if="!loading">登 录</span>
              <span v-else>登 录 中...</span>
            </el-button>
            <el-checkbox
              v-model="loginForm.rememberMe"
              style="margin: 0px 0px 25px 0px"
              >记住密码</el-checkbox
            >
            <div style="float: right" v-if="register">
              <router-link class="link-type" :to="'/register'"
                >立即注册</router-link
              >
            </div>
          </el-form-item>
        </el-form>
      </div>
      <!--  底部  -->
      <div class="el-login-footer">
        <span>Copyright © 2018-2022 诚淮 All Rights Reserved.</span>
      </div>
    </div>
  </template>
  
  <script>
  import { getCodeImg } from "@/api/login";
  import { getConfigKey } from "@/api/sys/common";
  import Cookies from "js-cookie";
  import { encrypt, decrypt } from "@/utils/jsencrypt";
  
  export default {
    name: "Login",
    data() {
      return {
        codeUrl: "",
        loginForm: {
          username: undefined,
          password: undefined,
          rememberMe: false,
          code: "",
          uuid: "",
        },
        loginRules: {
          username: [
            { required: true, trigger: "blur", message: "请输入您的账号" },
          ],
          password: [
            { required: true, trigger: "blur", message: "请输入您的密码" },
          ],
          code: [{ required: true, trigger: "change", message: "请输入验证码" }],
        },
        loading: false,
        // 验证码开关
        captchaOnOff: true,
        // 注册开关
        register: false,
        redirect: undefined,
      };
    },
    watch: {
      $route: {
        handler: function (route) {
          this.redirect = route.query && route.query.redirect;
        },
        immediate: true,
      },
    },
    created() {
      this.getCode();
      this.getCookie();
      this.getConfigKey("sys.account.registerUser").then((res) => {
        this.register = res.data === "true";
      });
      this.getConfigKey("sys.account.captchaOnOff").then((res) => {
        this.captchaOnOff = res.data === "true";
      });
    },
    methods: {
      getCode() {
        getCodeImg().then((res) => {
          this.captchaOnOff =
            res.data.captchaOnOff === undefined ? true : res.data.captchaOnOff;
          if (this.captchaOnOff) {
            this.codeUrl = "data:image/gif;base64," + res.data.img;
            this.loginForm.uuid = res.data.uuid;
          }
        });
      },
      getCookie() {
        const username = Cookies.get("username");
        const password = Cookies.get("password");
        const rememberMe = Cookies.get("rememberMe");
        this.loginForm = {
          username: username === undefined ? this.loginForm.username : username,
          password:
            password === undefined ? this.loginForm.password : decrypt(password),
          rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
        };
      },
      handleLogin() {
        this.$refs.loginForm.validate((valid) => {
          if (valid) {
            this.loading = true;
            if (this.loginForm.rememberMe) {
              Cookies.set("username", this.loginForm.username, { expires: 30 });
              Cookies.set("password", encrypt(this.loginForm.password), {
                expires: 30,
              });
              Cookies.set("rememberMe", this.loginForm.rememberMe, {
                expires: 30,
              });
            } else {
              Cookies.remove("username");
              Cookies.remove("password");
              Cookies.remove("rememberMe");
            }
            this.$store
              .dispatch("Login", this.loginForm)
              .then(() => {
                this.$router.push({ path: this.redirect || "/" }).catch(() => {});
              })
              .catch(() => {
                this.loading = false;
                if (this.captchaOnOff) {
                  this.getCode();
                }
              });
          }
        });
      },
    },
  };
  </script>
  
  <style rel="stylesheet/scss" lang="scss">
  .login {
    display: flex;
    height: 100%;
    background-image: linear-gradient(to bottom, #1e97ff, #4146fe);
    background-size: cover;
    .left-login {
      width: 70%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      .title {
        display: flex;
        width: 100%;
        padding-left: 10%;
        color: #fff;
        font-size: 42px;
        font-weight: bold;
        margin-top: 50px;
        align-items: center;
        .logo {
          width: 60px;
          height: 60px;
          padding-top: 10px;
          margin-right: 20px;
        }
      }
      .center {
        width: 850px;
        height: 850px;
        background-image: url("../assets/images/login-center.gif");
        background-size: cover;
      }
    }
    .right-login {
      flex: 1;
      display: flex;
      background-color: #fff;
      justify-content: center;
      align-items: center;
      .login-form {
        border-radius: 6px;
        background: #ffffff;
        width: 70%;
        padding: 25px 25px 5px 25px;
        .title {
          text-align: center;
          font-weight: bold;
          font-size: 30px;
        }
        .title-bottom {
          width: 40%;
          height: 5px;
          background-color: #1e97ff;
          border-radius: 12px;
          margin: 0 auto;
          margin-top: 10px;
          margin-bottom: 50px;
        }
        .el-form-item {
          margin-bottom: 40px;
        }
        .el-form-item__error {
          top: 120%;
        }
        .el-input {
          height: 38px;
          border: none;
          input {
            height: 38px;
          }
        }
        .el-input__inner {
          border: none;
          font-size: 16px;
          padding-left: 50px;
          padding-bottom: 10px;
          border-bottom: 2px solid #dcdfe6;
          border-radius: 0px;
          margin-bottom: 50px;
          &:focus,&:focus-within {
            border-bottom: 2px solid #1e97ff;
          }
        }
        .input-icon {
          height: 39px;
          width: 20px;
        }
        .login-tip {
          font-size: 13px;
          text-align: center;
          color: #bfbfbf;
        }
        .el-button--primary {
          height: 50px;
          background-image: linear-gradient(to right, #1e97ff, #4146fe);
          border-radius: 10px;
          margin-bottom: 10px;
          font-size: 18px;
          font-weight: bold;
        }
  
        .login-code {
          width: 33%;
          height: 38px;
          float: right;
          img {
            cursor: pointer;
            vertical-align: middle;
          }
        }
  
        .login-code-img {
          height: 38px;
        }
      }
    }
    .el-login-footer {
      height: 40px;
      line-height: 40px;
      position: fixed;
      bottom: 0;
      width: 100%;
      text-align: center;
      color: #fff;
      font-family: Arial;
      font-size: 12px;
      letter-spacing: 1px;
    }
  }
  </style>